Granted Patent
Utility
US 6,051,915 · App. 08/958,207
Piezoelectric transformer
Inventors:
Masafumi KATSUNO, Yoshiaki Fuda
Patented Case
View Patent ↗
Granted: Apr 18, 2000
Filed: Oct 3, 1997
Inventors
Masafumi KATSUNO
Yoshiaki Fuda
Assignee (at issue)
TOKIN CORPORATION
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.